- The next networking device I would like to talk about…is routers.…Routers are used to move data around large networks…such as WANs.…Primarily, a router's going to work…on layer three and layer four of the OSI model.…Though some routers can actually use…higher layers as well.…Routers are also intelligent devices.…Routers have to be intelligent,…because they need to be able to make…independent decisions about…sending data around the network.…When making decisions about sending data…around a network, there are a number of criteria…that routers can use to do this.…

One such criteria is hops.…Hops refer to the number of nodes a packet…has to pass through in order to get to its destination.…The router will count the hops available…by different routes, and it'll choose the route…with the smallest number of hops necessary…to get to the destination it is trying to…send the packet to.…Routers can also use network traffic…as a criteria for determining the best route.…In this situation, the router looks at…how much traffic is on the network,…

Resume Transcript Auto-Scroll

Author

Released

9/21/2015

Understanding the foundations of networking is paramount for any IT professional. This course covers the very basics. Professor of computer science Tim Pintello introduces the core networking topologies and implementation examples. He will also explain and compare the OSI and TCP/IP models, and introduce viewers to commonly used network devices, such as NICs, hubs, switches, and routers.